CN102306553A - Composite type activated carbon electrode material for super capacitor - Google Patents
Composite type activated carbon electrode material for super capacitor Download PDFInfo
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- CN102306553A CN102306553A CN201110178488.3A CN201110178488A CN102306553A CN 102306553 A CN102306553 A CN 102306553A CN 201110178488 A CN201110178488 A CN 201110178488A CN 102306553 A CN102306553 A CN 102306553A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/36—Nanostructures, e.g. nanofibres, nanotubes or fullerenes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/38—Carbon pastes or blends; Binders or additives therein
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Abstract
The invention discloses a novel composite type activated carbon electrode material. The material is prepared by the method comprising the following steps: grinding micron activated carbon with the average particle size being 5-20 mu m to obtain submicron activated carbon with the average particle size being 1-0.5 mu m by adopting high-pressure overheated steam; mixing the obtained submicron activated carbon with carbon nano tube dispersing slurry at high speed according to the mass ratio of (1-5):100; then carrying out spray drying treatment to obtain submicron activated carbon granules wound by a carbon nano tube; and finally calcining the submicron activated carbon granules wound by the carbon nano tube in a protective atmosphere of 800-900 DEG C to obtain the composite micron activated carbon electrode material. According to the invention, the existing micron activated carbon material can be ground and refined into submicron activated carbon material and a carbonized pore volume structure on the fresh surface is activated, then the carbon nano tube is wrapped and wound, and finally the material is prepared by carrying out a high-temperature calcination and the adhesion. The material can ensure that the carbonized pore volume surface in the interior of the activated carbon can be used at a limit state, so that the final electricity-storing effect can be improved by dozens of or a hundred times.
Description
Technical field
The invention belongs to the ultracapacitor field, be specifically related to a kind of capacitance electrode material of ultracapacitor, promptly novel composite reactive carbon electrode material.
Background technology
Ultracapacitor is that a kind of capacitance can reach thousands of farads very big capacity capacitor.Super capacitor with U.S. Cusparia Cooper company is an example; Principle according to capacitor; Capacitance depends on interelectrode distance and electrode surface area; In order to obtain so big capacitance; To dwindle distance between electrode of super capacitor as far as possible, increase electrode surface area; For this reason, adopt electric double layer principle and active carbon porous electrode.
When ultracapacitor electric double layer medium applies voltage on two electrodes of capacitor; Near producing on the dielectric interface of electrode with the electric charge of the entrained opposite polarity of electrode and being bound on the medium interface, form two electrodes of actual capacitor.Clearly, the distance of two electrodes is very little, has only several nm. while active carbon porous electrodes can obtain great electrode surface area, can reach 200m2/g.Thereby the ultracapacitor of this structure has great capacitance and can store very big electrostatic energy.With regard to energy storage, this characteristic of ultracapacitor is between traditional capacitor and battery.When electromotive force between two battery lead plates is lower than the oxidation-reduction electrode current potential of electrolyte; Electric charge on the electrolyte interface can not break away from electrolyte; Ultracapacitor is in normal operating conditions (usually below 3V); If capacitor two terminal voltages surpass the oxidation-reduction electrode current potential of electrolyte; So; Electrolyte will decompose, and be in abnormal condition.Along with the discharge of ultracapacitor, the electric charge on the positive and negative pole plate is released by external circuit, and the charge response on the electrolyte interface reduces.The charge and discharge process that this shows ultracapacitor is physical process all the time, does not have chemical reaction, so performance is stable, and is different with the storage battery that utilizes chemical reaction
The existing activated carbon granule of making electrode material is a micron order; Activated carbon granule inside is under the condition that the charing pore volume that carbonization process produces is sealing; Because the obstruction of ash; Charing pore volume inner surface is with extraneous obstructed; Also inoperative in capacitor, the active carbon porous does not obtain the use of limiting condition.Submicron order (below 1 micron) active carbon particle is also arranged on the market; This submicron order active carbon particle is used for doing electrode material has two problems; The one, under the tightly compacted situation of obstructed excess pressure; Bulk density does not reach; Do not reach the effect of high-efficiency energy-storage, if through behind the high pressure compressing tablet, the space between the submicron particles interface is too little; Be unfavorable for the infiltration of electrolyte, influenced the importing of wanting the energy storage electric charge; The 2nd, submicron order active carbon particle in the market all is to make with the wet method medium milling; In the process of processing; Micron particles is crushed in the process of submicron particles; Because the abrasive action of medium; The new exhausted major part of the uneven state of charing pore volume that produces on the particle surface all is destroyed, and this submicron order active carbon particle does not reach the effect of super energy storage yet.Therefore the active carbon porous does not obtain the use of limiting condition in the prior art, has limited the performance of such ultracapacitor.
Summary of the invention
The objective of the invention is in order to overcome the problems referred to above, a kind of novel composite reactive carbon electrode material is provided.The present invention increases electrode surface area through the limit utilization of the inner charing pore volume of active carbon, improves 10-100 on the basis of existing technology more doubly, to reach the effect of super energy storage.
The object of the invention can reach through following measure:
The present invention is the charing pore volume structure of existing micron-sized absorbent charcoal material dispersion and fining to submicron order (below 1 micron) and activation and maintenance fresh surface; Coat then and twine CNT (carbon nano-tube); And use the high-temperature calcination adhesion, obtained a kind of NEW TYPE OF COMPOSITE active carbon electrode material.This composite reactive carbon electrode material specifically prepares through following method: with average grain diameter is that the micron order active carbon of 5～20 μ m adopts the high pressure superheater steam to be crushed to the submicron order of average grain diameter 0.5～1 μ m; Submicron order activated carbon that obtains and carbon nano-tube dispersed paste are in mass ratio 1～5: 100 ratio high-speed mixing; Carry out spray drying then; Obtain carbon nano-tube and twine the sub-micron activated carbon granule; Again carbon nano-tube is twined the sub-micron activated carbon granule and in 800～900 ℃ protective atmosphere, calcine, obtain micron order composite reactive carbon electrode material.
The present invention was worked into existing micron-sized active carbon the activated carbon powder with active function of submicron order before this; The method of employing of the present invention is that the high pressure superheater steam is pulverized; It is high pressure superheater steam crushing and classification technology; Being specially in high pressure superheater steam crushing process adopts 295～305 ℃ overheated steam to pulverize; Wherein the operating pressure of overheated steam is 1.05～1.5MPa, and the pulverizing linear velocity is 500～700m/s.
The principle that this high pressure superheater steam is pulverized is: in the high pressure, superheated steam crushing process; The energy that the compressed steam specific discharge has is to be 4～5 times that the air-flow of medium is pulverized with the air; The temperature of superheated steam is usually between 295～305 ℃; Under the pressure condition of 1.05～1.5MPa; Discharge by superonic flow nozzzle and to make linear velocity reach 500～700m/s; The flow energy of steam stateization passes to by comminuting matter; Make that to have been had than conventional air by comminuting matter be strong 4～5 times crushing energy behind the medium air-flow; Being easy to make by comminuted material be crushed to the sub-micron state, is a kind of effective dry method submicron order crushing technology in ultra-fine grinding field.In addition; Pulverized micron-sized activated carbon granule is under the high-octane drive of superheated vapor supersonic speed; Material self collision is pulverized; This broken form has been avoided the pore volume structural damage of medium milling to the molecule surface irregularity; The inner charing pore volume of micron particles structure has obtained good protection when opening; Under the rotary speed that per minute 10,000 changes, the particle separation classification reaches 1 micron effect with interior fineness.Adopt high pressure, superheated steam to pulverize simultaneously the ash in the newborn particle surface charing pore volume that produces in the crushing process is also directly washed off by superheated vapor synchronously, activated the pore volume structure of fresh surface, charing pore volume structure also remains intact.Particulate after the pulverizing can directly obtain the sub-micron particulate that average grain diameter is 0.5～1 μ m after centrifugalizing.
In the carbon nano-tube dispersed paste that the present invention adopted, the average diameter of carbon nano-tube is 5～15nm, and average length is 5～20 μ m, and surface area is at 230～280m
2/ g, its dispersion liquid are water or methyl pyrrolidone, and its mass concentration is 1～5%.
Submicron order active carbon and carbon nano-tube dispersed paste be mixed and dispersed in high speed dispersor preferably.The rate of dispersion of high speed dispersor is 5000～6000 to walk around/min, the shearing force that the superelevation linear velocity produces, but the particulate in the moment ultra-fine dispersed paste.
The direct spray drying of suspension after the high speed dispersion can obtain carbon nano-tube and twine the sub-micron activated carbon granule.Spray-drying process adopts centrifugal spray drying equipment to carry out, and the inlet temperature of said centrifugal spray drying equipment is 250～300 ℃, and outlet temperature is 80～90 ℃, and centrifugal spray head rotating speed is 12000～15000 commentaries on classics/min.
Carbon nano-tube winding sub-micron activated carbon granule is calcined at last, and calcining can make CNT (carbon nano-tube) and sub-micron activated carbon granule that certain physical stiction force and hardness are arranged when increasing granularity.Protective atmosphere in the calcination process is nitrogen, helium, neon or argon gas.Calcination time is 2～4 hours, and is not broken for well when degree of calcination disperses slurrying to use with this electrode material in the later stage.
Composite reactive carbon resistance rod through after the calcining has been got back to the micron particles state again with powder body material; At this moment it has possessed super energy-storage function; Because the electric charge that will store at particle surface can in depth import inside through the CNT (carbon nano-tube) of high conduction performance, store electrical energy is come in the active pore volume space that can make full use of material internal.The micron order composite reactive carbon electrode material that the present invention finally obtains, its average grain diameter 2～10 μ m, specific area 1000～1300m
2/ g, its proterties is loose micron-sized powder, and particle surface is to having super electric conductivity between the granule interior, and the theory storage electrical efficiency of single onesize carbon granule can improve 10～100 times than simple active carbon.
The present invention also provides a kind of ultracapacitor composite activated carbon battery lead plate; It is the carbon activity material with above-mentioned NEW TYPE OF COMPOSITE active carbon electrode material; With conductive agent and the mixed electrode material that gets of binding agent; Again electrode material directly is pressed into the electrode for super capacitor plate; Perhaps electrode material and solvent are processed slurry; Again it is coated in metal colleeting comb surface and dries and suppress, process the electrode for super capacitor plate.
Wherein the weight proportion of NEW TYPE OF COMPOSITE active carbon electrode material and conductive agent and binding agent is 70～92: 5～20: 3～13; The weight ratio of said electrode material and solvent is 1: 2～30.Adopt conductive agent, binding agent and solvent not to have concrete restriction in the above-mentioned battery lead plate, the various conductive agents, binding agent and the solvent that adopt in the preparation of existing electrode of super capacitor plate all can; In a kind of preferred version, conductive agent is Super P (a Te Migao conductive carbon black), and said binding agent is PVDF, and said solvent is a methyl pyrrolidone.
Beneficial effect of the present invention:
NEW TYPE OF COMPOSITE active carbon electrode material of the present invention to submicron order and activate the charing pore volume structure of fresh surface, coats existing micron-sized absorbent charcoal material dispersion and fining then the winding CNT (carbon nano-tube), and makes with the high-temperature calcination adhesion.This material can obtain the inner charing pore volume surface of active carbon the use of limiting condition, makes final accumulate effect reach tens raisings to hundreds of times.The ultracapacitor of its preparation can be applicable to the accumulate battery of generation of electricity by new energy equipments such as electric automobile electric bicycle, solar wind-energy, and the fields such as capacitance technology upgrading on the electric apparatus equipment.
Description of drawings
Fig. 1 is a kind of preparation flow sketch map of composite reactive carbon electrode material of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Embodiment 1
The equal particle diameter of making even is the micron order active carbon of 10 μ m, carries out high pressure superheater with 300 ℃ of high-temperature vapors and pulverizes (operating pressure of overheated steam is 1.05MPa, and the pulverizing linear velocity is 500m/s), and obtaining flat particle diameter is the submicron order activated carbon of 1 μ m.Get 30g submicron order activated carbon; With 1000g carbon nano-tube dispersed paste (LB 100 type carbon nano-tube dispersed pastes; The Beijing Tiannai Science and Technology Co., Ltd; Content of carbon nanotubes 5wt%; Average diameter is 11nm; Average length is 10 μ m, and surface area is at 230～280m2/g, dispersion liquid NMP) mixed and dispersed in high speed dispersor (rate of dispersion be 6000 change/min).The dispersion liquid that obtains carries out spray drying in centrifugal spray drying equipment (inlet temperature of centrifugal spray drying equipment is 270 ℃; Outlet temperature is 85 ℃; Centrifugal spray head rotating speed be 13000 change/min); Obtain carbon nano-tube and twine the sub-micron activated carbon granule; Again carbon nano-tube is twined the sub-micron activated carbon granule and in 800～900 ℃ nitrogen atmosphere, calcined 2～4 hours, obtain micron order composite reactive carbon electrode material.Its average grain diameter 2～8 μ m, specific area 1000～1300m
2/ g.
Getting the above-mentioned micron order composite reactive carbon electrode material that obtains is negative electrode active material (90g); And Super P is conductive agent (5g); PVDF is binding agent (5g); Methyl pyrrolidone is a solvent; Mix the back and be pressed into the negative pole of super capacitor battery lead plate by existing method, the positive plate active material adopts the LiNi of HuaXin Energy Materials Co., Ltd., Xinxiang City
1/3Co
1/3Mn
1/3O
2Be active material (90g).The pole piece concrete grammar is: earlier PVDF is dissolved in the methyl pyrrolidone; Add then and the dispersed electro-conductive agent; Add and disperse micron order composite reactive carbon electrode material at last; Stop to disperse when reaching requirement Deng the fineness of slurry and viscosity; Screen cloth with 96 μ m sieves, coating, drying; Roll-in makes the both positive and negative polarity pole plate.
With positive/negative plate stamping-out on the laser cutting die; Obtaining very little to the greatest extent is the pole piece of 43mm*29mm; Adopt lamination technology; 9 positive poles; 8 negative poles with NKK4535 model barrier film, are assembled into the double electric layer capacitor of AC/AC symmetrical structure with it; Inject 1mol/LEt4BF4/AN electrolyte after 72 hours 100 ℃ of vacuumizes, make ultracapacitor A.
Be that the micron order active carbon of 10 μ m is a negative active core-shell material directly, adopt above-mentioned same method to prepare ultracapacitor B with average grain diameter.
The multiplying power discharging characteristic test
Respectively with 5 * 10
-3, 10 * 10
-3, 20 * 10
-3With 40 * 10
-3A/cm
2Current density two kinds of ultracapacitors are carried out charge-discharge test, its discharge capacity is as shown in table 1.
Discharge capacity under the different current densities of two kinds of ultracapacitors of table 1
| J/(10 -3A·cm -2) | 5 | 10 | 20 | 40 |
| Ultracapacitor B | 105 | 101 | 91 | 81 |
| Ultracapacitor A | 1152 | 1211 | 999 | 893 |
The ratio of the maximum power of ultracapacitor and ultracapacitor quality is the high specific power of ultracapacitor, and the high specific power of ultracapacitor B is 4750Wkg
-1, the high specific power of ultracapacitor A is 52248Wkg
-1
Embodiment 2
The equal particle diameter of making even is the micron order active carbon of 15 μ m, carries out high pressure superheater with 305 ℃ of high-temperature vapors and pulverizes (operating pressure of overheated steam is 1.15MPa, and the pulverizing linear velocity is 600m/s), and obtaining flat particle diameter is the submicron order activated carbon of 0.9 μ m.Get 40g submicron order activated carbon, with 1000g carbon nano-tube dispersed paste (LB 200 type carbon nano-tube dispersed pastes, Beijing Tiannai Science and Technology Co., Ltd; Content of carbon nanotubes 5wt%; Average diameter is 11nm, and average length is 10 μ m, and surface area is at 230～280m
2/ g, dispersion liquid water) mixed and dispersed in high speed dispersor (rate of dispersion be 5500 change/min).The dispersion liquid that obtains carries out spray drying in centrifugal spray drying equipment (inlet temperature of centrifugal spray drying equipment is 280 ℃; Outlet temperature is 90 ℃; Centrifugal spray head rotating speed be 13000 change/min); Obtain carbon nano-tube and twine the sub-micron activated carbon granule; Again carbon nano-tube is twined the sub-micron activated carbon granule and in 800～900 ℃ nitrogen atmosphere, calcined 2～4 hours, obtain micron order composite reactive carbon electrode material.Its average grain diameter 5～10 μ m, specific area 1000～1300m
2/ g.
Get the above-mentioned micron order composite reactive carbon electrode material that obtains and be negative electrode active material and prepare battery lead plate and ultracapacitor by the method for embodiment 1, the high specific power that records this ultracapacitor is 52182Wkg
-1
Claims (10)
1. NEW TYPE OF COMPOSITE active carbon electrode material; It is characterized in that this composite reactive carbon electrode material prepares by following method: with average grain diameter is that the micron order active carbon of 5～20 μ m adopts the high pressure superheater steam to be crushed to the submicron order of average grain diameter 0.5～1 μ m; Submicron order activated carbon that obtains and CNT dispersed paste are in mass ratio 1～5: 100 ratio mixed at high speed; Carry out spray-drying then; Obtain CNT and twine the sub-micron activated carbon granule; Again CNT is twined the sub-micron activated carbon granule and in 800～900 ℃ protective atmosphere, calcine, obtain micron order composite reactive carbon electrode material.
2. composite reactive carbon electrode material according to claim 1; It is characterized in that adopting 295～305 ℃ overheated steam to pulverize in the said high pressure superheater steam crushing process; Wherein the operating pressure of overheated steam is 1.05～1.5MPa, and the pulverizing linear velocity is 500～700m/s.
3. composite reactive carbon electrode material according to claim 1; The average diameter that it is characterized in that carbon nano-tube in the said carbon nano-tube dispersed paste is 5～15nm; Average length is 5～20 μ m, and its dispersion liquid is water or methyl pyrrolidone, and its mass concentration is 1～5%.
4. composite reactive carbon electrode material according to claim 1 is characterized in that said submicron order activated carbon and carbon nano-tube dispersed paste mixed and dispersed in high speed dispersor, and rate of dispersion is 5000～6000 commentaries on classics/min.
5. composite reactive carbon electrode material according to claim 1 is characterized in that it is 2～4 hours that carbon nano-tube is twined the calcination time of sub-micron activated carbon granule, and said protective atmosphere is nitrogen, helium, neon or argon gas.
6. composite reactive carbon electrode material according to claim 1 is characterized in that average grain diameter 2～10 μ m of said micron order composite reactive carbon electrode material, specific area 1000～1300m
2/ g.
7. composite reactive carbon electrode material according to claim 1; It is characterized in that said spray-drying process adopts centrifugal spray drying equipment to carry out; The inlet temperature of said centrifugal spray drying equipment is 250～300 ℃; Outlet temperature is 80～90 ℃, and centrifugal spray head rotating speed is 12000～15000 commentaries on classics/min.
8. ultracapacitor composite activated carbon battery lead plate; It is characterized in that with the described NEW TYPE OF COMPOSITE active carbon electrode material of claim 1 be the carbon activity material; With conductive agent and the mixed electrode material that gets of binding agent; Again electrode material directly is pressed into the electrode for super capacitor plate; Perhaps electrode material and solvent are processed slurry; Again it is coated in metal colleeting comb surface and dries and suppress, process the electrode for super capacitor plate.
9. ultracapacitor composite activated carbon battery lead plate according to claim 8, the weight proportion that it is characterized in that said NEW TYPE OF COMPOSITE active carbon electrode material and conductive agent and binding agent is 70～92: 5～20: 3～13; The weight ratio of said electrode material and solvent is 1: 2～30.
10. ultracapacitor composite activated carbon battery lead plate according to claim 8 is characterized in that said conductive agent is Super P, and said binding agent is PVDF, and said solvent is a methyl pyrrolidone.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103545487A (en) * | 2013-10-28 | 2014-01-29 | 深圳格林德能源有限公司 | Preparation method of high-viscosity ultra-fine dispersion anode slurry of lithium ion battery |
| CN103779106A (en) * | 2013-12-31 | 2014-05-07 | 昆明纳太能源科技有限公司 | Nanometer carbon paper for super-capacitor and preparing method thereof |
| CN105551823A (en) * | 2016-02-02 | 2016-05-04 | 深圳市贝特瑞新能源材料股份有限公司 | Carbon-carbon composite electrode material, preparation method and application |
| CN107428953A (en) * | 2015-02-27 | 2017-12-01 | 盖茨公司 | Carbon nano-structured pre-blend and its application |
| CN110178194A (en) * | 2016-12-02 | 2019-08-27 | 快帽系统公司 | Combination electrode |
| CN111370661A (en) * | 2020-03-10 | 2020-07-03 | 协鑫高新材料科技有限公司 | Method for preparing lithium ion battery anode material and precursor thereof by high-temperature high-pressure steam pretreatment |
| CN114621621A (en) * | 2020-12-14 | 2022-06-14 | 清华大学 | Light absorber prefabricated liquid and preparation method thereof |
| US11557765B2 (en) | 2019-07-05 | 2023-01-17 | Fastcap Systems Corporation | Electrodes for energy storage devices |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545487A (en) * | 2013-10-28 | 2014-01-29 | 深圳格林德能源有限公司 | Preparation method of high-viscosity ultra-fine dispersion anode slurry of lithium ion battery |
| CN103545487B (en) * | 2013-10-28 | 2014-09-17 | 深圳格林德能源有限公司 | Preparation method of high-viscosity ultra-fine dispersion anode slurry of lithium ion battery |
| CN103779106A (en) * | 2013-12-31 | 2014-05-07 | 昆明纳太能源科技有限公司 | Nanometer carbon paper for super-capacitor and preparing method thereof |
| CN107428953A (en) * | 2015-02-27 | 2017-12-01 | 盖茨公司 | Carbon nano-structured pre-blend and its application |
| CN105551823A (en) * | 2016-02-02 | 2016-05-04 | 深圳市贝特瑞新能源材料股份有限公司 | Carbon-carbon composite electrode material, preparation method and application |
| CN110178194A (en) * | 2016-12-02 | 2019-08-27 | 快帽系统公司 | Combination electrode |
| US11450488B2 (en) | 2016-12-02 | 2022-09-20 | Fastcap Systems Corporation | Composite electrode |
| CN110178194B (en) * | 2016-12-02 | 2023-10-03 | 快帽系统公司 | composite electrode |
| US11557765B2 (en) | 2019-07-05 | 2023-01-17 | Fastcap Systems Corporation | Electrodes for energy storage devices |
| US11848449B2 (en) | 2019-07-05 | 2023-12-19 | Fastcap Systems Corporation | Electrodes for energy storage devices |
| CN111370661A (en) * | 2020-03-10 | 2020-07-03 | 协鑫高新材料科技有限公司 | Method for preparing lithium ion battery anode material and precursor thereof by high-temperature high-pressure steam pretreatment |
| CN114621621A (en) * | 2020-12-14 | 2022-06-14 | 清华大学 | Light absorber prefabricated liquid and preparation method thereof |
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